class ProgressDialog(QDialog):
""" Progress dialog shows progress bar for algorithm.
"""
def __init__(self, iface):
QDialog.__init__(self, iface.mainWindow())
self.workerThread = None
self.state = False
self.resultStatus = None
self.doReRun = False
self.wasCanceled = False
self.wasSuccessful = False
self.savedProj = None
self.result = None
self.messageTxt = {
'msg_optimierung': self.tr('Berechnung der optimalen Stuetzenpositionen...'),
'msg_seillinie': self.tr('Berechnung der optimale Seillinie...')
}
# Build GUI Elements
self.setWindowTitle(self.tr("SEILAPLAN wird ausgefuehrt"))
self.resize(500, 100)
self.container = QVBoxLayout()
self.progressBar = QProgressBar(self)
self.progressBar.setMinimumWidth(500)
self.statusLabel = QLabel(self)
self.hbox = QHBoxLayout()
self.cancelButton = QDialogButtonBox()
self.closeButton = QDialogButtonBox()
self.resultLabel = QLabel(self)
self.resultLabel.setMaximumWidth(500)
self.resultLabel.setSizePolicy(
QSizePolicy(QSizePolicy.Fixed, QSizePolicy.Expanding))
self.resultLabel.setWordWrap(True)
spacer1 = QSpacerItem(20, 20, QSizePolicy.Fixed,
QSizePolicy.Fixed)
self.rerunButton = QPushButton(self.tr("zurueck zum Startfenster"))
self.rerunButton.setVisible(False)
spacer2 = QSpacerItem(40, 20, QSizePolicy.Expanding,
QSizePolicy.Minimum)
self.cancelButton.setStandardButtons(QDialogButtonBox.Cancel)
self.cancelButton.button(QDialogButtonBox.Cancel).setText(self.tr("Abbrechen"))
self.cancelButton.clicked.connect(self.onAbort)
self.closeButton.setStandardButtons(QDialogButtonBox.Close)
self.closeButton.button(QDialogButtonBox.Close).setText(self.tr("Schliessen"))
self.closeButton.clicked.connect(self.onClose)
self.hbox.addWidget(self.rerunButton)
self.hbox.addItem(spacer2)
self.hbox.addWidget(self.cancelButton)
self.hbox.setAlignment(self.cancelButton, Qt.AlignHCenter)
self.hbox.addWidget(self.closeButton)
self.hbox.setAlignment(self.closeButton, Qt.AlignHCenter)
self.closeButton.hide()
self.container.addWidget(self.progressBar)
self.container.addWidget(self.statusLabel)
self.container.addWidget(self.resultLabel)
self.container.addItem(spacer1)
self.container.addLayout(self.hbox)
self.container.setSizeConstraint(QLayout.SetFixedSize)
self.setLayout(self.container)
# noinspection PyMethodMayBeStatic
def tr(self, message, **kwargs):
"""Get the translation for a string using Qt translation API.
We implement this ourselves since we do not inherit QObject.
:param message: String for translation.
:type message: str, QString
:returns: Translated version of message.
:rtype: QString
Parameters
----------
**kwargs
"""
# noinspection PyTypeChecker,PyArgumentList,PyCallByClass
return QCoreApplication.translate(type(self).__name__, message)
def setThread(self, workerThread):
self.workerThread = workerThread
self.connectThreadSignals()
def connectThreadSignals(self):
# Connect signals of thread
self.workerThread.sig_jobEnded.connect(self.jobEnded)
self.workerThread.sig_jobError.connect(self.onError)
self.workerThread.sig_value.connect(self.valueFromThread)
self.workerThread.sig_range.connect(self.rangeFromThread)
self.workerThread.sig_text.connect(self.textFromThread)
self.workerThread.sig_result.connect(self.resultFromThread)
self.rerunButton.clicked.connect(self.onRerun)
def run(self):
# Show modal dialog window (QGIS is still responsive)
self.show()
# start event loop
self.exec()
def jobEnded(self, success):
self.setWindowTitle("SEILAPLAN")
if success:
self.progressBar.setValue(self.progressBar.maximum())
self.wasSuccessful = True
# Close progress dialog so that adjustment window can be opened
self.close()
else: # If there was an abort by the user
self.statusLabel.setText(self.tr("Berechnungen abgebrochen."))
self.progressBar.setValue(self.progressBar.minimum())
self.finallyDo()
def valueFromThread(self, value):
self.progressBar.setValue(int(value))
def rangeFromThread(self, range_vals):
self.progressBar.setRange(int(round(range_vals[0])), int(round(range_vals[1])))
def maxFromThread(self, max):
self.progressBar.setValue(self.progressBar.maximum())
def textFromThread(self, message):
self.statusLabel.setText(self.messageTxt[message])
def resultFromThread(self, resultStatus):
self.resultStatus = resultStatus
# resultStatus:
# 1 = Optimization successful
# 2 = Cable takes off from support
# 3 = Optimization partially successful
def onAbort(self):
self.setWindowTitle('SEILAPLAN')
self.statusLabel.setText(self.tr(
'Laufender Prozess wird abgebrochen...'))
self.workerThread.cancel() # Terminates process cleanly
self.wasCanceled = True
def onError(self, exception_string):
self.setWindowTitle(self.tr('SEILAPLAN: Berechnung fehlgeschlagen'))
self.statusLabel.setText(self.tr('Ein Fehler ist aufgetreten:'))
self.resultLabel.setText(self.tr(exception_string))
self.resultLabel.setHidden(False)
self.progressBar.setValue(self.progressBar.minimum())
self.setLayout(self.container)
self.finallyDo()
def onRerun(self):
self.doReRun = True
self.onClose()
def finallyDo(self):
self.rerunButton.setVisible(True)
self.cancelButton.hide()
self.closeButton.show()
def onClose(self):
self.close()
